Longitudinal joint for concrete pavements



Nov. 10, 1936.

B. H. LAMPERT LONGITUDINAL JOINT FOR CONCRETE BAVEMENTS Filed July 27, 1935 7 J6 J5 J7 L fi :QEF 17 ATTORNEY.

UNITED sTA'res rarer-ii" orriee LONGITUDINAL JOINT FOR CONCRETE PAVEMENTS Ben H. Lampert,

Oshkosh, Wis., assignor to Lampert & Lampert, Oshkosh, Wis., a corporation of Wisconsin Application July 2'7,

1 Claim.

The invention relates to pavements and more particularly to concrete pavements.

In the laying of concrete pavements it has been recognized that cracks that it is important to cracking, particularly in of the road, and various will develop in time and control the direction of the region of the center arrangements have been proposed to provide a weakened plane type of longitudinal joint at the center of the road. The object of the present invention is to provide a joint of the type above cally disposed metal jo described in which vertiint members are readily mounted on a centrally disposed reinforcement and cooperate therewith to provide a weakened plane at the center of the road.

A further object of the invention is to provide a joint construction in which a series of longitudinally extending corrugated sheet metal joint members are detachably secured in vertical position by metal clips to a bar metal reinforcement in the central portion of the pavement.

The invention further'consists in features hereinafter set the several forth and more particu larly defined by the claim at the conclusion hereof.

In the drawing:

Fig. l is a vertical sectional view through the central portion of a concrete pavement having the joint construction embodying the invention;

Fig. 2 is a plan view joint;

of the parts forming the Fig. 3 is a detail elevation view of an end of a joint member;

Fig. 4 is a detail sectional view taken on the line 4-4 of Fig. 3;

Fig. 5 is a detail perspective View showing the method and means for connecting the joint members to the bar reinforcement.

Referring to the drawing, nates generally a concrete the numeral 6 desigpavement which may be of any suitable composition and provided with any suitable or well known reinforcement.

The present invention is designed to provide a weakened plane joint concrete pavement and scription will be posed sheet metal confined cludes a series of interconnected joint members at the central part of any hence the following deto this joint which invertically dis 1, a bar support, and means for securing said members to said support.

Each of the joint members I light gauge sheet metal with longitudinally extending corrugations 8 also for securing a good her and the concrete 1 These joint members 1 they may be conveni for strengthening it and bond between said memn which it is embedded. are of a length so that ently handled and are 1935, Serial No. 33,427

adapted to be connected to each other by an interlocking or slip joint, and for this purpose one end of each joint member I has a sheet metal connector part 93 secured thereto as by punchings Hi and having flanged guide portions ll to slidably receive the end of the next joint member I, said connector 9 having a hole l2 formed in its body or Web so as to provide access to the adjoining ends of the joint members i. It is also to be noted that the end portions 53 of the corrugated joint members are in line with each other and that the plane passing through said portions forms a base line for these corrugated portions do not interfere with the slipping of the end joint member into the flanged guide portions ll of the connector on the adjacent joint member.

The bar support herein shown includes the longitudinally extending reinforcing bars 14 spaced at equal of the concrete pavement and above the subgrade it and connected together at intervals by the transversely disposed tie bars it which are secured to said bars it by tie wires ll.

The joint members I are secured in vertically disposed position upon the bar support by metal clips 58 which have oppositely disposed hooked ends it and a central portion 29 that straddles the joint member 'l and engages at the bend 2! with the top of said member while holding the bottom edge of said member against one of the transverse tie bars or rods ll when said hooked ends it are hooked onto said bar at opposite sides of said member as shown in Fig. 5.

Thus with the above construction adjacent ends of the joint members I are secured together by a slip joint and each member is secured in upright position to the bar reinforcement or support by the clips ES and this structure when embedded in the concrete pavement as shown in Fig. 1 provides a weakened plane running along the center of the road and designated by the term Line of fracture. 4

l desire it to be understood that this invention is not to be limited to any particular form or arrangement of parts except in so far as such limitations are included in the claim.

What I claim as my invention is:

In a longitudinal joint for concrete pavements, the combination of a series of interconnected longitudinally extending sheet metal joint members, a support for said members including spaced tie bars, and clips having a bent portion engaging said members and hooked ends engageable with said bars for securing said joint members in vertically disposed position.

BEN H. LAMPERT. 

